Cagayan River

Amulung, Cagayan

The Cagayan River, also known as the Rio Grande de Cagayan, is the longest and largest river in the Philippine Archipelago. The river traverses four provinces: Nueva Vizcaya, Quirino, Isabela and Cagayan. These provinces have an approximate population of two million people, mostly farmers and indigenous tribesmen.

The Ibanag people derive their tribe's name from Cagayan River's anci ...

ent name, Bannag. The Gaddang tribe lived in the upper riches of the Cagayan River and its tributaries.

There are dams in two of the river's tributaries, the Magat and Chico Rivers, and there are also several mining concessions in the mineral-rich Cordillera Mountains near the headwaters of the two tributary rivers.

The river's headwaters are at the Caraballo Mountains of the Central Luzon at an elevation of approximately 1,524 meters. The river flows north for some 505 kilometers to its mouth at the Babuyan Channel near the town of Aparri, Cagayan. The river drops rapidly to 91 meters above sea level some 227 kilometers from the river mouth. Its principal tributaries are the Chico, Siffu, Mallig, Magat and Ilagan Rivers.

Magat River is the largest tributary with an estimated annual discharge of 9,808 million cubic meters. It lies in the southwestern portion of the basin, stretching approximately 150 kilometers from Nueva Vizcaya down to its confluence with Cagayan River about 55 kilometers from the river mouth. Both Magat and Chico Rivers have extensive drainage areas which comprise about 1/3 of the whole basin.

The Ilagan River originates from the western slopes of the Sierra Madre and drains the eastern central portion of the Cagayan River basin with an estimated yearly discharge of 9,455 million cubic meters. It flows westward and joins the Cagayan River at Ilagan, Isabela, 200 kilometers from the mouth.

The Siffu-Mallig system lies on the slope of the Central Cordillera ranges flowing almost parallel to the Magat River. Marshes and swamps are found in some parts of its lower reaches.

Cagayan River and its tributaries have deposited sediments of Tertiary and Quaternary origin, mostly limestone sands and clays, throughout the relatively flat Cagayan Valley which is surrounded by the Cordillera Mountains in the west, Sierra Madre in the east and the Caraballo Mountains in the south.

The Cagayan River passes through one of the few remaining primary forests in the Philippines. It supports the lives of numerous endemic and endangered species, like the Luzon bleeding-heart pigeon (Gallicolumba luzonica), Philippine eagle (Pithecophaga jefferyi) and a rare riverine fish, locally called ludong (Cestreaus plicatilis).

The ludong spawns in Cagayan River's upper reaches in Jones, Isabela. In late October until mid-November, the fish travel down the river to release their eggs at the river mouth near Appari. In February, ludong fry by the millions are again caught in fine nets as these travel upstream.

Due to the dwindling number of ludong caught yearly, local governments have imposed a ban on catching the fish and its fry, but the ban has failed.

Cagayan River News

  • BFAR Releases 100 000 Elvers In Cagayan River

    The Bureau of Fisheries and Aquatic Resources (BFAR) recently seeded the Cagayan River and its tributaries with at least 100,000 elvers to increase the dwindling population of eels in the region.

    Aaron Mayor, BFAR Focal Person for Stock Enhancement of Elvers program, said they continuously seeded the Cagayan River and communal water bodies with stocks like elvers and tilapia fingerlings to save their depleted population due to overfishing.

    This year, he said the bureau identified the towns of Gattaran and Baggao in Cagayan; San Mariano, Angadanan, San Guillermo, and San Pablo i ...

  • DPWH Works On Cagayan Tagoloan And Imus Rivers To Prevent Flooding

    The Department of Public Works and Highways (DPWH) has started flood control work on "critical portions" of 3 major rivers across the country.

    The P356-million worth flood-risk management project involves "full-scale improvement works" on:

    • Cagayan River in Tuguegarao City
    • Tagoloan River in Misamis Oriental
    • Imus River in Cavite

    These priority areas were identified by the Japan International Cooperation Agency in two studies, DPWH project office director Patrick Gatan said in a statement on Monday, July 11.

    Here are the specific works that the government engineers will ...

  • Along The Riverside We Go A Biyahe Ni Drew Itinerary In Cagayan Valley

    In the northeastern part of the archipelago lies the Cagayan River, the longest and widest river in the Philippines, rightfully tagged also as the Rio Grande de Cagayan because of, well, its proportions.

    Cagayan River has a length of 505-kilometers that starts from the grand mountains of Sierra Madre and flows up north to Aparri, seeping out the Babuyan Channels.

    This week, as "Biyahe ni Drew" goes along the border of the shell-filled riverside and unearths the rich history behind the Cagayanons' way of living, it turns out that the Cagayan River is surprisingly more than what the eyes c ...

  • Cagayan River The Longest And Largest River In The Philippines Rio Grande De Cagayan

    The Cagayan River, also known as the Rio Grande de Cagayan, is the longest and largest river in the Philippine Archipelago. It is located in the Cagayan Valley region in northeastern part of Luzon Island and traverses the provinces of Nueva Vizcaya, Quirino, Isabela and Cagayan.

    The river's headwaters are at the Caraballo Mountains of the Central Luzon at an elevation of approximately 1,524 metres (5,000 ft).

    • Whitewater rafting
    • Kayaking

    How to get there:

    By Plane - Choice Airphil Express and Cebu Pacific ply routes to the provincial capital of Tuguegarao C ...

  • Top Summer Destinations In The Philippines

    It's officially summer in the Philippines. Summer here means more fun and more sun. Philippines is known to its famous beaches in the world. You heard of Boracay, right? We have more of that. Beach, beach and more beach! If you speak of summer, the Philippines defines that word. So if you're planning for a summer getaway, here a some perfect summer destinations to visit.

    1. Boracay Island – Boracay Island maybe overrated but it is no denying that this beautiful island is one of the best summer destinations in Asia. A tourist's favorite because of its stunning beaches, fine white sand and ...

  • 6 Day North Luzon Backpacking

    This was the last leg of our 6-Day North Luzon Backpacking Adventure.

    From Santa Ana, we had to get to Tuguegarao City to catch a bus going to Manila. But we decided to ride one of the night-sleeper buses so we could explore more of Cagayan Valley in one day.

    In the morning, we hopped on one of the UV Express vans and went to the sleepy town of Aparri, which was two hours away from Santa Ana. We just checked out the Aparri Delta, where the Cagayan River meets the sea, the Aparri Park, a church, and had Pancit Cabagan in a local panciteria.

    Then we were off to Iguig, which was another ...